package org.drools.agent;
import java.io.IOException;
import java.io.InputStream;
import java.net.HttpURLConnection;
import java.net.URL;
import java.net.URLConnection;
import org.drools.common.DroolsObjectInputStream;
import org.drools.rule.Package;
public class HttpClientImpl implements IHttpClient {
public LastUpdatedPing checkLastUpdated(URL url) throws IOException {
URLConnection con = url.openConnection();
HttpURLConnection httpCon = (HttpURLConnection) con;
try {
httpCon.setRequestMethod( "HEAD" );
String lm = httpCon.getHeaderField( "lastModified" );
LastUpdatedPing ping = new LastUpdatedPing();
ping.responseMessage = httpCon.getHeaderFields().toString();
if (lm != null) {
ping.lastUpdated = Long.parseLong( lm );
}
return ping;
} finally {
httpCon.disconnect();
}
}
public Package fetchPackage(URL url) throws IOException, ClassNotFoundException {
URLConnection con = url.openConnection();
HttpURLConnection httpCon = (HttpURLConnection) con;
try {
httpCon.setRequestMethod( "GET" );
InputStream in = httpCon.getInputStream();
DroolsObjectInputStream oin = new DroolsObjectInputStream(in);
return (Package) oin.readObject();
} finally {
httpCon.disconnect();
}
}
public static void main(String[] args) throws Exception {
HttpClientImpl cl = new HttpClientImpl();
URL url = new URL("http://localhost:8888/org.drools.brms.JBRMS/package/com.billasurf.manufacturing.plant/SNAP");
LastUpdatedPing ping = cl.checkLastUpdated( url );
Package p = cl.fetchPackage( url );
System.err.println(ping);
System.err.println( ping.isError() );
}
}